Spark-plug.



Patented Dec. 1, 1914.

/lvI/ENo/c A TTORNEY.

M. ENOS.

SPARK PLUG.

APPLIOATION FILED Nov,1o,191s.

WITNESSES:

vzo

MANUEL ENOS, 0F LEMOORE, CALIFORNIA.

SPARK-PLUG.

Specication of Letters Patent.

Patented Dec. 1,1914.

"tion filed November 10, 191.8. Serial No. 800,212.

To all whom 'it may concern Be it known that I, MANUEL Enos, a citizen ofthe United States', and a resident of the town of Lemoore, county of Kings, land State of California, have invented a new and I useful Improvement in Automatic Cleaning Spark-Plugs, of which the folioY` in is a specification.

. y inventionrelates to s ark plugs and its object is to readily an automatically clean them from carbon or other foreign matter without taking them apart and without stopping the engine of which they are a.

art. I accomplish these and other objects y the mechanism hereinafter described. -In the drawings which accompany this v. specication Figure 1 is an isometric view of the spark plug complete. Fig. 2 is ka sectional view of the spark plug on the line a shown in Fig. 1, and Fig. 3. Fig. 3 shows a top View of the outer casing. Fig. 4 is a View of a lock washer. Fig. 5 is a fiat view of a ratchet wheel used in adjusting the plug. Fig.` 6 shows the ratchet complete. Fig. 7 is a` View of the spark plug from the bottom. Fig. 8 shows the inner casing.

Referring to said drawings, A is an outer shell which is threaded on the outside lower end 1. The outside upper end 2, is adapted to receive a wrench. On the inside thereof is a lateral round hole 4, which uniformly diminishes in diameter from the bottom to a shoulder G, near the top, and from the said shoulder 6, to the top of such outer casing the said hole 4, extends with a uniform diameter. At points on the extreme bottom of outer casing A, are projections j and j. b and b are holes through the walls of outer casing A, extending preferably downward, obliquely, from the outside, above the threads 1. The top of said ou'ter casing A has a small section z', shown in Figs 2 and 3 cut out.

C is the core of the spark plug and consists of a casing r, shown in Fig. 8, the lower end of which is turnably fitted in the outside casing A. Casing ris hollow and has holes c and c through its Wall. In casing ll and above holes o and o is a shoulder ai and,- from shoulder :v to the top of casing 1 the diameter of the hole is approximately uniform. Holes e and c can register with holes b and b by turning core C. The upper por- `tion of casing r is threaded and lateraily 'fluted on the outside thereof. The iiuting is illustrated on Fig. 1, by character 8.

e is a metal core extending through the center of the plug, having-four points f, f', f2, and f3 at the bottom thereof, andy is threaded for a nut d at'the top thereof. Metal core e is insulated and is covered with porcelain or other nonconducting material 3, except at each end thereof, which is exposed. The porcelain or nonconducting material 3 is fitted snugly in the upper end of Casin v r and has a shoulder mi thereon whichxts snugly against shoulder rv. There is a space 5 left between casing 2 and insulationf3 which communicates with opening c and c. s is a washer of insulating materialf'which separates the top of inner Icasing 'r from. nut d.

lgv is a ratchet wheel adapted to fit over'the neck 9 of ,casing r, with the inner projec-` tions 7 following the Huting 8.

o is a projection at a point) on the dat side of ratchet wheel p;

D is a lever which is adapted atl'one end to fit over neck 9. AIt has an ordinary pawl 13 and 15 are ordinary followers'on neckY 9, having lock washer 14' betweenthem.

In assembling my spark plug I insert the core C inside of outer shell A, with lneck I9 extending beyond the top of such outer shell then insert ratchet wheel 79 'over v neck 9 with projection o' in the space z' cutout of the top of outer shell A. The object of projection 0 and out out portion z' is to limit the revolution of core C, and When'the spark plug is assembled holes and and holes b and o should register when the core C is turned either to the extreme right or extreme left. Lever D is inserted over neck 9 so dog 12 engages notches 18 in ratchet wheel g1. The purpose of ratchet wheel 71 and dog 12 is to permit lever D to be. looked to ratchet wheel p in any one of the notches in said ratchet whee`1"fso lever D can extend in any direction from 10o I the center of ratchet wheel p from any direction from the spark plug. It will be noted that as ratchet wheel p is locked to casing r, and lever D is locked to ratchet wheel p in one of several adjustments, by 105 turning lever D casing 1' is turned and the ports b o and o c' can be opened'or closed. When the spark plug is adjusted for use in an engine and it is desired to clean it while the engine isrunning, the un core C is moved by lever D so the opening' b registers with opening c and opening ,b

registers with opening c when the force of l the explosion in an engine will drive a blast through openings 5 clearing the spark plug.

Then the core C can be turned so openings b and c, and b and c are not continuous, andV the spark plugwill not permit the escape of gas. I have formed the lower end of 'metal rod e with four projections or spark points.

If it is l desired to prinie the cylinders when the engine is not in motion, the openings b and c can be made to communicate, and gasolene injected Y What-I clain'ias my ,invention and upon what I vdesire Letters Patent is:

1. In a spark plug, the combination of an outer shell having a threaded lower portion anda conical opening with the larger diameterat the bottom of such shell, an inner casing rotatably fitted in such outer shell and 'extending upward beyond it, an insulated metal core extending Ylengthwise in suchV inner casing and tightly fitted within the upper part thereof, an air chamber between the lower end of the Wall o'f the inner casing and the insulation oftthe metal core open at the bottom,.holes through the Walls of the inner casing and outer shell adapted to register and to form an opening from said air chamber to the outside Awhen the inner casing is turned to a fixed point, and to have such communication cut off by rotating the inner casing in the outer'shell beyond such fixed point, a handle attached to the top of such inner casingT adapted to turn such inner casing, all substantia y as described.

2. 1n a spark plug, the. combination of an outer shell having a threaded lower portion, an inner casing rotatably fitted in such outer shell and extending upwardbeyond it, an` insulated metalcoi'e extending lengthwise in such inner casing and tightly fitted within the upper part thereof, an air chamber be' tween the lower end'of the Wall of the inner l casing and the insulation of the metal cor-e1y open at the bottom, holes-through the walls of the inner casing and outer shell adapted to form an opening from said air chamber to the outer shell beyond such fixed point,

means for rotatingsuch inner casing consisting of a track in the top'orf the outer shell, a lever having one end fitted over the top of the inner casing and attached thereto, and a projection attached to said lever adapted to travel in said track within fixed limits, all ftbstantially as described.

3. In a spark plug, the combination or an outer shell having-a threaded lowei` portion, an inner casing rotatably fitted in such o uter shell and extending upward beyond it, an insulated metal core extending lengthwise in such inner casing and tightly fitted within the upper part thereof, an air chamber between-the lower end of the wall of the inner casing and the insulation of the metal core open at the bottom, holes through the walls of the inner casing and outer shell vadapted to forman opening from said air chamber to the outside when the inner casing is. Y turned to a fixed point, and to have such communication cut oil' by rotating the inner casing in the outer shell beyond such fixed point.l means for rotating such inner casing consisting of a track in the top of the outer shell, a ratchet whccl locked to the upper end of the inner casing having a projection thereon adapted to travel within fixed limits in said track, a lever turnably mounted on the top of such inner casing and by means of a dogrv adapted to he locked to such ratchet wheel, all substantially as described.

MANUEL ENOS.

Witnesses ANITA Gn., IIEnBieu'r fIUi'iLNiin. 

